From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Tabular record of test times, part numbers, and gap sizes for various chassis.
| Identifier | ExFiles\Box 15\1\ Scan213 | |
| Date | 2nd February 1930 | |
| x7250. TIME FOR 60 GALLS. TUBE PIECE NO. GAP SIZE. CHASSIS NO. WHEN BROUGHT UP TO DATE. 105 18-EX. 1.12.29. E77675 5 1/2 / 7 19-EX. E77675 5 1/2 / 7 20-EX. E79448 6 / 7 1/2 21-EX. 104 E79448 22-EX. 115 E79448 23-EX. 2.2.30. 110 E79448 24-EX. 2.2.30. 25-EX. | ||